Enhanced power factor and thermoelectric performance for n-type Bi2Te2.7Se0.3 based composites incorporated with 3D topological insulator nanoinclusions

doi:10.1016/j.nanoen.2020.105512

	Enhanced power factor and thermoelectric performance for n-type Bi2Te2.7Se0.3 based composites incorporated with 3D topological insulator nanoinclusions
	Jabar, Bushra 1,2; Qin, Xiaoying 1; Mansoor, Adil 1; Ming, Hongwei 1,2; Huang, Lulu 1,2; Danish, Mazhar Hussain 1,2; Zhang, Jian 1; Li, Di 1; Zhu, Chen 1,2; Xin, Hongxing 1
刊名	NANO ENERGY
	2021-02-01
卷号	80
关键词	Thermoelectric performance Bi2Te2.7Se0.3 Nanoinclusion Power factor Thermal conductivity
ISSN号	2211-2855
DOI	10.1016/j.nanoen.2020.105512
通讯作者	Qin, Xiaoying(xyqin@issp.ac.cn) ; Zhang, Jian(zhangjian@issp.ac.cn) ; Li, Di(lidi@issp.ac.cn)
英文摘要	n-type Bi2Te2.7Se0.3 (BTS) alloy is a state-of-the-art room temperature thermoelectric material used for refrigeration commercially. However, wide application is limited by its low performance. Here, we show that incorporation of nano-sized 3D topological insulator (3D-TI) Bi2Se3 in Bi2Te2.7Se0.3 bring about a large electron mobility and increased electrical conductivity owing to the enhanced contribution of topologically protected conducting surface states as well as large Seebeck coefficient due to energy dependent carrier scattering. Besides, the incorporation of 3D-TI nanoinclusions leads to enhanced phonon scattering. As a result, addition of 0.3 vol% of Bi2Se3 in BTS results in similar to 36% increase in power factor and similar to 16% decrease in total thermal conductivity, leading to a large figure of merit ZT(max) = 1.28 (at 375 K) and a large average ZT(ave) = 1.16 (at T = 300-525 K), which are 62% and 59% greater than that of BTS, respectively.
资助项目	National Natural Science Foundation of China[11674322] ; National Natural Science Foundation of China[51672278] ; National Natural Science Foundation of China[51972307]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000618005500003
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/120541]
专题	中国科学院合肥物质科学研究院
通讯作者	Qin, Xiaoying; Zhang, Jian; Li, Di
作者单位	1.Chinese Acad Sci, Key Lab Photovolta & Energy Conservat Mat, Inst Solid State Phys, HFIPS, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Jabar, Bushra,Qin, Xiaoying,Mansoor, Adil,et al. Enhanced power factor and thermoelectric performance for n-type Bi2Te2.7Se0.3 based composites incorporated with 3D topological insulator nanoinclusions[J]. NANO ENERGY,2021,80.
APA	Jabar, Bushra.,Qin, Xiaoying.,Mansoor, Adil.,Ming, Hongwei.,Huang, Lulu.,...&Song, Chunjun.(2021).Enhanced power factor and thermoelectric performance for n-type Bi2Te2.7Se0.3 based composites incorporated with 3D topological insulator nanoinclusions.NANO ENERGY,80.
MLA	Jabar, Bushra,et al."Enhanced power factor and thermoelectric performance for n-type Bi2Te2.7Se0.3 based composites incorporated with 3D topological insulator nanoinclusions".NANO ENERGY 80(2021).